Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
Institution1832 Asset Management L.P.
Latest Disclosed Ownership296,479 shares
Latest Disclosed Value $ 142,072,737
1832 Asset Management L.P. reports 0.67% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On May 14, 2026 - 1832 Asset Management L.P. filed a 13F-HR form disclosing ownership of 296,479 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $142,072,737 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 6 shares of Berkshire Hathaway Inc.. This represents a change in shares of -0.67% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 296,479 -1,986 -0.67 142,073 -5.30 0.1306
2026-02-13 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 298,465 229,098 330.27 150,023 330.20 0.1143
2025-11-14 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 69,367 -22,113 -24.17 34,874 -21.52 0.0275
2025-08-13 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 91,480 -375,259 -80.40 44,438 -82.12 0.0347
2025-05-14 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 466,739 153,503 49.01 248,576 75.07 0.2259
2025-02-14 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 313,236 203,990 186.73 141,984 182.38 0.1207
2024-11-13 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 109,246 -82 -0.08 50,282 13.06 0.0383
2024-08-13 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 109,328 -291,683 -72.74 44,475 -73.63 0.0361
2024-05-14 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 401,011 243,686 154.89 168,633 200.53 0.0998
2024-02-13 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 157,325 -802,842 -83.61 56,112 -83.32 0.0808
2023-11-13 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 960,167 657,837 217.59 336,346 226.25 0.4771
2023-08-14 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 302,330 190,884 171.28 103,095 199.60 0.2005
2023-05-12 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 111,446 -755,937 -87.15 34,411 -87.16 0.0708
2023-02-15 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 867,383 729,461 528.89 267,935 627.53 0.5508
2022-11-14 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 137,922 59,137 75.06 36,828 71.21 0.0785
2022-08-15 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 78,785 -1,341,664 -94.45 21,510 -95.65 0.0433
2022-05-16 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,420,449 1,397,235 6,018.93 494,411 6,921.89 0.8071
2022-02-15 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 23,214 -176,080 -88.35 7,041 -87.33 0.0125
2021-11-15 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 199,294 3,979 2.04 55,592 3.19 0.1042
2021-08-20 2021-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 195,315 -376,422 -65.84 53,875 -63.59 0.1042
2021-08-16 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 195,315 -376,422 53,875 0.1043
2021-05-17 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 571,737 413,947 262.34 147,950 306.95 0.3197
2021-02-16 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 157,790 27,437 21.05 36,356 31.63 0.0850
2020-11-16 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 130,353 710 0.55 27,620 19.38 0.0721
2020-08-14 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 129,643 14,560 12.65 23,137 9.11 0.0694
2020-05-26 2020-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 115,083 20,849 22.12 21,206 -0.77 0.0765
2020-05-14 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,154 -86,080 1,501 11,349.1157
2020-02-14 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 94,234 -174 -0.18 21,371 9.21 0.0651
2019-11-14 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 94,408 -70 -0.07 19,569 -2.29 0.0623
2019-08-14 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 94,478 64,530 215.47 20,028 233.47 0.0648
2019-05-15 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 29,948 -8,294 -21.69 6,006 -22.96 0.0205
2019-02-14 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 38,242 9,038 30.95 7,796 24.94 0.0308
2018-11-14 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 29,204 -5,339 -15.46 6,240 -3.66 0.0204
2018-08-14 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 34,543 10,670 44.69 6,477 35.87 0.0219
2018-05-15 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 23,873 -5,960 -19.98 4,767 -18.86 0.0176
2018-02-14 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 29,833 -12,793 -30.01 5,875 -22.70 0.0191
2017-11-14 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 42,626 11,070 35.08 7,600 42.43 0.0266
2017-08-14 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 31,556 -338,484 -91.47 5,336 -91.36 0.0242
2017-05-15 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 370,040 26,224 7.63 61,777 9.00 0.2209
2017-04-01 2016-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 343,816 179,577 109.34 56,676 138.96 0.1738
2017-02-14 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 163,635 23,253
2016-11-15 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 164,239 -38,483 -18.98 23,718 -19.67 0.0891
2016-08-12 2016-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 202,722 30,537 17.73 29,526 -27.27 0.1148
2016-08-12 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 202,722 30,537 48,626 0.1172
2016-05-12 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 172,185 140,892 450.23 40,596 872.59 0.0989
2016-02-12 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 31,293 26,150 508.46 4,174 546.13 0.0180
2015-11-12 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,143 1,228 31.37 646 -29.71 0.0027
2015-08-13 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,915 -448,595 -99.13 919 -98.59 0.0031
2015-05-13 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 452,510 -200,010 -30.65 65,333 -33.02 0.2458
2015-02-12 2014-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 652,520 154,395 31.00 97,547 41.73 0.3021
2014-11-12 2014-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 498,125 366,615 278.77 68,824 315.58 0.2246
2014-08-13 2014-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 131,510 -418,535 -76.09 16,561 -75.60 0.0522
2014-05-14 2014-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 550,045 550,045 57.95 67,884 72.13 0.2334
2014-02-13 2013-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -348,230 -100.00 0 -100.00
2013-11-13 2013-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 348,230 -637,700 -64.68 39,438 -64.23 0.1749
2013-08-14 2013-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 985,930 985,930 110,253 0.4828
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.